diff --git a/lms/nladmin-system/src/main/java/org/nl/wms/st/outbill/wql/QST_IVT_CHECKOUTBILL.wql b/lms/nladmin-system/src/main/java/org/nl/wms/st/outbill/wql/QST_IVT_CHECKOUTBILL.wql
index 3d79d237a..f6a7e2deb 100644
--- a/lms/nladmin-system/src/main/java/org/nl/wms/st/outbill/wql/QST_IVT_CHECKOUTBILL.wql
+++ b/lms/nladmin-system/src/main/java/org/nl/wms/st/outbill/wql/QST_IVT_CHECKOUTBILL.wql
@@ -76,7 +76,7 @@
 			    ios.*,
 			    cu.shd_dtl_num,
 			    cu.cust_name,
-			    dtl.vbeln,
+			    IFNULL(dtl.vbeln,'') as vbeln,
 			    cu.cust_simple_name
             FROM
             	ST_IVT_IOStorInv ios